Muthuvel Karunanidhi Muthu (born 14 January 1948) is an Indian actor, playback singer and politician.
Muthu is the eldest son of late former Tamil Nadu chief minister M. Karunanidhi and his first wife Padmavathi, sister of actor-singer Chidambaram S.
Muthu started acting in 1970 and appeared in films such as Pillaiyo Pillai, Samayalkaran, Anayavilaku, Ingeyum Manidhargal and Pookkari.
Karunanidhi initially had wanted Muthu to be his political heir in the early 1970s, but later launched him into films as a counter to M G Ramachandran, founder of the AIADMK.
[5] Muthu later had difference of opinions with Karunanidhi and he went on to join his father's rival party AIADMK.